Priest (2011) - IMDb

PRIEST, a post-apocalyptic sci-fi thriller, is set in an alternate world -- one ravaged by centuries of war between man and vampires. The story revolves around a legendary Warrior Priest from the last Vampire War who now lives in obscurity among the other downtrodden human inhabitants in walled-in dystopian cities ruled by the Church. When his niece is abducted by a murderous pack of vampires, Priest breaks his sacred vows to venture out on a quest to find her before they turn her into one of them. He is joined on his crusade by his niece's boyfriend, a trigger-fingered young wasteland sheriff, and a former Warrior Priestess who possesses otherworldly fighting skills. Written by Screen Gems
First impression, whoa, someone really hates the Catholic Church. The more you go into the movie though it looks as if while the author hates the upper political machinations of the church they feel that the priests, the working peons are the only true followers of the faith.

If you want to see a mindless movie were the good guys whack the bad guys this is the perfect film.